How to Make the Most Realistic AI Videos (Step-by-Step Tutorial)
HubSpot's CMO duo walk the full Veo 3.1 + Nano Banana ad workflow live, prompts included.
Watch on YouTube youtube.com →
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How are founders making product demos, ads, and social video with AI (Veo, Sora, Runway, HeyGen, ElevenLabs)?
The playbook that emerged in 2025: write the script yourself, use Gemini or ChatGPT to turn it into a shot-by-shot prompt list, generate clips in Veo (inside Google Flow), Sora 2, or Runway, then cut it together in CapCut or Premiere with an ElevenLabs voiceover. The reference case is Kalshi's NBA Finals ad, made by one AI filmmaker in three days for about $2,000. For SaaS product demos specifically, founders skip generation entirely and pair real screen captures with AI demo tools like Supademo, since showing the actual product beats synthesizing it.
Go deeper
18 resources.
How to make Product Ads with Veo 3
A current, step-by-step product-ad build in Veo you can copy this afternoon.
Watch on YouTube youtube.com →
Veo 3 Tutorial: How to Make an Ad Using AI
Takes one ad from blank page to finished cut, showing every intermediate artifact.
Watch on YouTube youtube.com →
Put Real Products and People into AI Video Ads (Veo 3 Full Tutorial)
Solves the founder's real problem: getting YOUR actual product into generated footage.
Watch on YouTube youtube.com →
The NEW Way to Build a SaaS Product Demo (With AI)
Shows interactive AI demos replacing the classic recorded walkthrough.
Watch on YouTube youtube.com →How Kalshi made an AI ad using Google Veo 3
The canonical breakdown of the first AI-generated ad to air during the NBA Finals, tool by tool.
Open adage.com →An AI video ad is making a splash. Is it the future of advertising?
Mainstream, skeptical reporting on the Kalshi ad that helps you separate the workflow from the hype.
Open npr.org →The chaotic Kalshi ad was made with AI for $2,000. The creator shared how he made it
PJ Accetturo's actual numbers: 300-400 generations for 15 usable clips, script to air in three days.
Open yahoo.com →Sora 2 is here
The primary source on what Sora 2 can and cannot do, including synced dialogue and sound.
Open openai.com →OpenAI launches the Sora app alongside the Sora 2 model
Explains the Sora app distribution angle founders can ride, not just the model.
Open techcrunch.com →Introducing Flow: Google's AI filmmaking tool designed for Veo
Flow is where most founder Veo workflows actually live; this is the official launch explainer.
Open blog.google →Runway Gen-4: AI video generation with world consistency
Primary source on the consistency features that make Runway usable for real brand work.
Open runwayml.com →Runway introduces Gen-4 (announcement thread)
The launch thread with side-by-side examples so you can judge output quality yourself.
Open x.com →How to Create Product Demo Videos Using Veo 3.1 and Google AI Studio
A demo-specific walkthrough, useful when the ad tutorials skew too cinematic.
Open kaizenaiconsulting.com →How to Make a SaaS Product Demo Video With AI
The screen-capture-first demo workflow, the right call when your product is software not pixels.
Open supademo.com →Kling vs Sora vs Veo vs Runway: The AI Video Reality Check
An India-built video company stress-tests the big four models on real ad jobs.
Open invideo.io →AI Video Creation with Veo 3 and Flow for SaaS
SaaS-flavoured Veo + Flow recipes: founder messages, demos, and explainer formats.
Open creolestudios.com →Google Flow (Veo, Imagen, Gemini studio)
The single tool where you storyboard, generate, and stitch Veo clips; over 275M videos made in it.
Open labs.google →Terms in this answer
More in Video, Image & Audio
- Why can a solo founder now do what needed an agency? 17 →
- What's the realistic quality bar, what works and what still looks fake? 18 →
- Which AI video tool should I actually use, and for what job? 17 →
- How are founders using AI avatars and UGC-style actors instead of hiring creators? 19 →
- How are founders using AI voice, music, and audio (ElevenLabs, Suno, NotebookLM)? 17 →
- How do founders create product images, brand visuals, and logos with AI? 17 →
- What does AI video and image actually cost, and what's a sensible starter stack on a founder budget? 13 →
- How do you write prompts that actually get usable AI video and images? 16 →
- How do you keep characters and brand look consistent across AI-generated scenes and assets? 16 →
- How do founders dub and localize video into Indian and global languages with AI? 14 →
- How do founders turn one long recording into weeks of short clips? 14 →
- What are the legal, copyright, and disclosure rules for AI-generated marketing content? 18 →
- Do AI-made ads actually perform, or is it hype? 14 →
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